Air filter device

Details Air filter device Air filter device

2001-11-23

2002-07-30

Lichtenstein, Lisa (Department: 2911)

Environmental heating and cooling; fluid handling and sanitary e

Heating or cooling

Air treatment

Design Patent

active

D0461004

CLAIM:
I claim the ornamental design for an air filter device, as shown.

REFERENCES:
patent: D306198 (1990-02-01), Matherne
patent: D452302 (2001-12-01), Hagen

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